diff --git a/CMakeLists.txt b/CMakeLists.txt
index 17ee3fc2..9027d073 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,7 +16,6 @@ string(REGEX
 message(STATUS "Opus project version: ${PROJECT_VERSION}")
 
 project(Opus LANGUAGES C VERSION ${PROJECT_VERSION})
-include(opus_buildtype.cmake)
 
 option(OPUS_STACK_PROTECTOR "Use stack protection" ON)
 option(OPUS_USE_ALLOCA "Use alloca for stack arrays (on non-C99 compilers)" OFF)